Penandra and I have been exchanging emails about the actor that plays Gibb's father on NCIS and Booth's grandfather on Bones. Rather than them being the same person, Penandra posited that perhaps they are identical twins "Jackson" and "Hank". That left the question why they have different last names. I found that very intriguing. I hope you do too.

After numerous emails we decided to collaborate on a story involving this question. This is the story we came up with to answer that question. We plan to update this story every Friday.

Since fics seem to get lost in the crossover area, Penandra will be posting this story in the NCIS fandom and I will post it in the Bones fandom. Our stories will be nearly identical. We are both tweakers of stories. There may be a time when she tweaks a chapter before posting it and I won't or vice versa. None of the tweaks will be germane to the story. We don't expect you to read this story twice. We are aware that there are Bones fans and NCIS fans and they aren't always the same hence the two postings for each chapter.

We both really love reviews and would like to hear from you about our story. We hope you find this story very entertaining.

I don't own Bones or NCIS.

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Booth was sitting in his office talking to Charlie when 'Hot Blooded' sounded from under a pile of reports on his desk. Balancing a pile of folders Booth found the phone and answered the call, "Booth".

"Booth, I'm going to have to stay later tonight. A body is being sent over from NCIS. Their Medical Examiner, Cam knows him, his name's Donald Mallard, he called and wants me to help him identify a body that was found at Naval Station Norfolk a couple of days ago. He's making arrangements to have the body sent to the Jeffersonian this afternoon. He and Special Agent Gibbs will be escorting the body and I expect them to arrive in about thirty minutes or so."

The hair on the back of his neck rising, Booth scowled. "Gibbs? Not Jethro Gibbs?"

"Yes. . . Yes, it is Jethro Gibbs. Do you know him?"

He never thought this day would come, but come it did. Booth thumped his left fist against the top of his desk. "I've never met him, but, I know who he is. I'll be over in a little while."

"That's not necessary, Booth. If you could pick up Christine from Daycare, you can just head home. Hodgins and Cam are staying and I'll ask one of them to drive me home when I'm ready."

"Nah, that's okay. I'll pick up Christine, but I'll bring her by the Lab. I'll ask Angela if she could watch her for awhile." He tried to keep the strain from his voice. "I want to meet this Jarhead Gibbs."

"Booth is this a military thing?"

Amused, Booth laughed. "No it's a family thing, Bones. Gibbs is a relative. I promise I'll explain tonight. I have to go. I'll see you in a while. I love you." Ending his call, Booth immediately called Hank Booth.

Hearing his grandfather on the line, Booth cleared his throat. "Hey Pops, guess who's about to walk into the Jeffersonian to work with Bones."

"I'm fine, Seeley. Thanks for asking. Good to hear from you too." Hank hated it when people skipped polite conversation. "Now that we have that out of the way, who's going to work with Temperance?"

Embarrassed that he'd forgotten his manners, Booth apologized. " Sorry, Pops, I was a little distracted. Anyways, Special Agent Leroy Jethro Gibbs of the Naval Criminal Investigative Service is on the way to the Jeffersonian."

"Seeley, watch that temper of yours. I mean it. Leroy doesn't have anything to do with that business between Jackson and me. Your father should have never told you about it in the first place. I want it forgotten. It's done. We're done."

"I'm not going to cause any trouble Pops. I'm just letting you know that I'm finally going to meet the famous Leroy Jethro Gibbs."

"Seeley."

"Pops, don't worry about it. It's cool. I'm cool. I have to go. I'll talk to you later. Bones and I will bring Christine over to see you this weekend. We'll call on Saturday to set up a time. Okay?"

"Don't try to change the subject Shrimp. You behave yourself. I mean it."

"Love you Pops. Talk to you on Saturday." Booth responded quickly and ended the call.

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Arriving at the Lab, Booth carried Christine over to Angela's office. Casually looking over the platform as he passed by it, Booth saw that Brennan's company had already arrived. He assumed that the tall silver haired man standing near the top of the steps was Gibbs. Booth stopped and carefully studied the man. Although the man wore civies and the haircut was a bit shaggy for a former Marine, Booth recognized the military bearing.

Gibbs, feeling someone staring at him, turned to see a tall, dark haired man holding a baby in his arms. The cold look the man gave him caused him to wonder who he was and why the attitude.

Booth scowled, raised his eyebrows and turned to walk down the hallway to Angela's office. As he entered her office, Booth smiled at the artist and gave her a cheery greeting. "Hey Angela, how's it going? Did Bones ask if you'd be able to watch Christine for a little while?"

Angela nodded her head, stood up and walked across the room holding her hands out toward the baby. Pulling Christine into her arms, she walked over to the playpen she had set up in the corner of her office. "Yes, of course, it's fine." As she placed Christine in the playpen she looked back at Booth. "Bren seemed a little confused when she asked, but you go ahead, Christine and Michael can bond. I have a few things I need to take care of before I can go home for the day, anyway."

Grateful for her understanding, Booth smiled at her in gratitude. "Thanks, Angela! You're the best."

With a little wave of her hand, Angela winked at him. "Yeah, I know."

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After he arrived at the steps to the platform, Booth slid his card through the reader and walked slowly up the steps. The silver-haired man had moved around to the other side of the platform while Booth had been in Angela's office and watched the newcomer as he came up onto the platform. Cam, Bones, and an elderly man with glasses stood looking down at what Booth assumed was the victim.

Ignoring Gibbs, Booth walked over to the exam table and tried to mask his disgust. "That's the body?"

Not really one hundred percent sure herself, Cam looked up from the table. "That's what we've been told."

Brennan watched Cam slowly pick up pieces and study them. "Dr. Mallard says the body was found in a several bags behind the NEX."

Pursing his lips, Booth stared at the bits and finally shook his head. "How can you tell it's a body? It looks like dog food to me."

Aware that Booth hated the gooey bodies, Brennan held up a human eye. "There are two of these."

Bile rising in his throat, Booth swallowed. "Okay . . . yeah I see."

Hearing Gibbs laugh quietly, Booth chose to ignore him, walked over to the railing on the opposite side of the platform from Gibbs and leaned against it. Staring at Gibbs with an expressionless face, Booth pulled his poker chip out of his pocket and started rubbing it between his thumb and index finger.

Curious, Gibbs walked over to where Booth was standing. "And who are you?"

Not willing to talk to Gibbs, Booth ignored him, turned and stared at Brennan and Cam.

Daisy, standing next to Brennan decided that she'd answer the question. "That's Agent Seeley Booth. He's our liaison between the FBI and the Jeffersonian."

The flash of displeasure crossing Booth's face caused Daisy to hunch her shoulders and turn back to look at the body bits.

Not sure what Booth's problem was, Gibbs reached out his hand and introduced himself. "I'm NCIS . . . Special Agent Leroy Gibbs."

Deliberately rude, Booth ignored the out-stretched hand, shrugged his shoulders, pushed away from the railing and walked past Gibbs toward the stairs. Pausing in front of the exit to the platform, Booth stared at Brennan for a few seconds. "I'm going to Angela's office, Bones. If you need me for anything, I'll be there."

Puzzled with Booth's behavior, Gibbs watched Booth walk down the stairs and down the hallway. Ducky, having witnessed Booth's rudeness, walked over to where Gibbs was and stared at the retreating figure. "Do you know him?'

The younger man's attitude reminded him of someone in his past. "Maybe, I'm not sure."

With a slight smile on his face, Ducky folded his arms across his chest. "Well apparently he knows you."

Brennan glanced towards Gibbs. "I think Booth is related to you. That is what he intimated to me in an earlier conversation."

Surprised, Ducky looked back at Gibbs. "Oh. That's interesting."

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A/N: For those of you who were wondering about the title of this story, Castor and Pollux are from Greek mythology. There are very good explanations on the internet as to who they are.

Reviews would be greatly appreciated. Thank you.